ASTROSAT CZTI

Data Quality Report

Orbit 12957

Creation date: 2024-06-27T16:34:24.020417
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1G08_043T01_9000001902_12957cztM0_level2.evt modeM0/AS1G08_043T01_9000001902_12957cztM0_level2_quad_clean.evt
Size (bytes)529,577,28084,542,400
Size505.0 MB 80.6 MB
Events in quadrant A3,651,322525,656
Events in quadrant B4,839,538500,450
Events in quadrant C3,353,934528,109
Events in quadrant D3,705,461505,295

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0152473
B0189092
C0148092
D0156772

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71911502.085941%
B71916689.289390%
C71911071.487971%
D71911051.460159%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7917 7193 0 0 0.00% 0.00%
B 7917 7193 282 282 3.56% 3.92%
C 7917 7193 0 0 0.00% 0.00%
D 7917 7193 3 3 0.04% 0.04%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 189 131153 727.2 879 856 179.2
A 1 162 65455 360.53 879 856 179.2
A 1 178 27662 149.61 879 856 179.2
B 4 239 734173 4603.37 843 821 159.3
B 3 64 467410 2928.85 843 821 159.3
B 0 85 268109 1677.81 843 821 159.3
C 13 61 6156 26.83 858 860 197.4
C 8 222 4616 19.03 858 860 197.4
C 14 234 2170 6.64 858 860 197.4
D 8 195 342663 1638.28 860 835 208.7
D 1 52 88648 420.86 860 835 208.7
D 2 234 34099 159.42 860 835 208.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter